<template>
  <el-dialog
    v-model="dialogVisible"
    :title="`批量添加${parameter.title}`"
    :destroy-on-close="true"
    width="580px"
    draggable
  >
    <el-form class="drawer-multiColumn-form" label-width="100px">
      <el-form-item label="模板下载 :">
        <el-button type="primary" :icon="Download" @click="downloadTemp"> 点击下载 </el-button>
      </el-form-item>
      <el-form-item label="文件上传 :">
        <el-upload
          action="#"
          class="upload"
          :drag="true"
          :limit="excelLimit"
          :multiple="true"
          :show-file-list="true"
          :http-request="uploadExcel"
          :before-upload="beforeExcelUpload"
          :on-exceed="handleExceed"
          :on-success="excelUploadSuccess"
          :on-error="excelUploadError"
          :accept="parameter.fileType!.join(',')"
        >
          <slot name="empty">
            <el-icon class="el-icon--upload">
              <upload-filled />
            </el-icon>
            <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
          </slot>
          <template #tip>
            <slot name="tip">
              <div class="el-upload__tip">请上传 .xls , .xlsx 标准格式文件，文件最大为 {{ parameter.fileSize }}M</div>
            </slot>
          </template>
        </el-upload>
      </el-form-item>
      <el-form-item label="数据覆盖 :">
        <el-switch v-model="isCover" />
      </el-form-item>
    </el-form>
  </el-dialog>
</template>

<script setup lang="ts" name="ImportExcel">
  import { ref } from "vue"
  import { useDownload } from "@/hooks/useDownload"
  import { Download } from "@element-plus/icons-vue"
  import { ElNotification, UploadRequestOptions, UploadRawFile } from "element-plus"

  export interface ExcelParameterProps {
    title: string // 标题
    fileSize?: number // 上传文件的大小
    fileType?: File.ExcelMimeType[] // 上传文件的类型
    tempApi?: (params: any) => Promise<any> // 下载模板的Api
    importApi?: (params: any) => Promise<any> // 批量导入的Api
    getTableList?: () => void // 获取表格数据的Api
  }

  // 是否覆盖数据
  const isCover = ref(false)
  // 最大文件上传数
  const excelLimit = ref(1)
  // dialog状态
  const dialogVisible = ref(false)
  // 父组件传过来的参数
  const parameter = ref<ExcelParameterProps>({
    title: "",
    fileSize: 5,
    fileType: ["application/vnd.ms-excel", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"]
  })

  // 接收父组件参数
  const acceptParams = (params: ExcelParameterProps) => {
    parameter.value = { ...parameter.value, ...params }
    dialogVisible.value = true
  }

  // Excel 导入模板下载
  const downloadTemp = () => {
    if (!parameter.value.tempApi) return
    useDownload(parameter.value.tempApi, `${parameter.value.title}模板`)
  }

  // 文件上传
  const uploadExcel = async (param: UploadRequestOptions) => {
    let excelFormData = new FormData()
    excelFormData.append("file", param.file)
    excelFormData.append("isCover", isCover.value as unknown as Blob)
    await parameter.value.importApi!(excelFormData)
    parameter.value.getTableList && parameter.value.getTableList()
    dialogVisible.value = false
  }

  /**
   * @description 文件上传之前判断
   * @param file 上传的文件
   * */
  const beforeExcelUpload = (file: UploadRawFile) => {
    const isExcel = parameter.value.fileType!.includes(file.type as File.ExcelMimeType)
    const fileSize = file.size / 1024 / 1024 < parameter.value.fileSize!
    if (!isExcel)
      ElNotification({
        title: "温馨提示",
        message: "上传文件只能是 xls / xlsx 格式！",
        type: "warning"
      })
    if (!fileSize)
      setTimeout(() => {
        ElNotification({
          title: "温馨提示",
          message: `上传文件大小不能超过 ${parameter.value.fileSize}MB！`,
          type: "warning"
        })
      }, 0)
    return isExcel && fileSize
  }

  // 文件数超出提示
  const handleExceed = () => {
    ElNotification({
      title: "温馨提示",
      message: "最多只能上传一个文件！",
      type: "warning"
    })
  }

  // 上传错误提示
  const excelUploadError = () => {
    ElNotification({
      title: "温馨提示",
      message: `批量添加${parameter.value.title}失败，请您重新上传！`,
      type: "error"
    })
  }

  // 上传成功提示
  const excelUploadSuccess = () => {
    ElNotification({
      title: "温馨提示",
      message: `批量添加${parameter.value.title}成功！`,
      type: "success"
    })
  }

  defineExpose({
    acceptParams
  })
</script>
<style lang="scss" scoped>
  @import "./index.scss";
</style>
